Add test for cli keystore path generation (#4571)

* Add test for cli keystore path generation

* Fix test

substrate/client/chain-spec/src/chain_spec.rs

@@ -228,7 +228,7 @@ impl<G, E> ChainSpec<G, E> {
 		let client_spec = ClientSpec {
 			name: name.to_owned(),
 			id: id.to_owned(),
-			boot_nodes: boot_nodes,
+			boot_nodes,
 			telemetry_endpoints,
 			protocol_id: protocol_id.map(str::to_owned),
 			properties,